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9a +(5 +6b), stiind ca 3a + 2b =16

Răspuns :

Bordei2008
9a+6b=16x3=48
48+5=53
Coroana?
Icecon2005
 3a + 2b =16
inmultim cu 3
[3a + 2b =16 ]×3⇒3×3a+3×2b=3×16⇒9a+6b=48

9a +(5 +6b)=9a+5+6b=(9a+6b)+5=48+5=53
deci
9a +(5 +6b)=53

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